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Finding the Fourth Proportional to 1,373,566.78, 1,895,516.19 and 769,954.78

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Solution

The fourth proportional to 1,373,566.78, 1,895,516.19 and 769,954.78 is: 1,062,534.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373,566.78 : 1,895,516.19 = 769,954.78 : x
  2. Step 2: Convert to fraction form
    1,373,566.78/1,895,516.19 = 769,954.78/x
  3. Step 3: Cross multiply
    1,373,566.78x = 1,895,516.19 × 769,954.78
  4. Step 4: Simplify right side
    1,373,566.78x = 1,459,461,751,057.89
  5. Step 5: Solve for x
    x = 1,459,461,751,057.89/1,373,566.78
  6. Step 6: Final answer
    x = 1,062,534.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.